Figure 7-19 Apr-U Unit - NEC ElectraElite 48 System Hardware Manual

Issue 6
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3.4 APR-U Unit (Analog Port Ringer)
The Analog Port Adapter with Ringing provides an interface for
installing Single Line Telephones, modems, NEC VoicePoint/
VoicePoint Plus Conferencing unit, and other compatible analog
devices. The APR-U Unit also generates ringing signals.
providing ring generation, the user can install a personal fax
machine or an answering machine for convenience. Two
user-adjustable switches are provided on the adapter; one allows
for 600 or a complex impedance interface to devices such as a
modem or Single Line Telephone, the second switch (SW1) is set
to position 2.
An AC Adapter is Required.
When a CTA-U, CTU(C)-U, CTU(S)-U, VDD-U, or HFU-U Unit and
an APR-U Unit are both installed, only one AC Adapter is required.
3.4.1 Installing APR-U Unit on any DTP/DTU Multiline Terminal
but DTP-2DT-1/DTP-16HC-1.
1.
2.
ACA-U Unit
(AC Adapter)

Figure 7-19 APR-U Unit

Prepare Multiline Terminal for adapter installation.
Refer to Section 2 Preparing Multiline Terminal for
Adapter Installation.
Plug the unit into the receptacle connector inside the
base plate. Refer to
to the Multiline Terminal.
Electra Elite
Figure 7-20 Attaching the Unit
Installing Optional Equipment
By